Retrieves the MIME type of the resource pointed by uri.
In the event the URI cannot be found, NULL is returned and error is set to G_BOOKMARK_FILE_ERROR_URI_NOT_FOUND In the event that the MIME type cannot be found, NULL is returned and error is set to G_BOOKMARK_FILE_ERROR_INVALID_VALUE
a valid URI
a newly allocated string or NULL if the specified URI cannot be found.
GException on failure.
2.12
Retrieves the MIME type of the resource pointed by uri.
In the event the URI cannot be found, NULL is returned and error is set to G_BOOKMARK_FILE_ERROR_URI_NOT_FOUND In the event that the MIME type cannot be found, NULL is returned and error is set to G_BOOKMARK_FILE_ERROR_INVALID_VALUE